库车坳陷却勒地区新生代盐构造特征、演化及变形控制因素
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
本文利用野外地质调查结果、遥感资料、地震资料和钻、测井数据,建立了两条库车坳陷却勒地区的区域大剖面,约束却勒地区盐构造特征和演化,分析东、西段变形差异及差异形成过程,探讨构造变形控制因素。却勒地区发育的盐构造样式主要有盐底辟、盐焊接、盐撤凹陷、大型盐推覆体、外来盐席、盐枕、盐背斜和滑脱褶皱,其中,盐撤凹陷、盐背斜和滑脱褶皱仅发育于东段,造成东、西段构造变形差异。却勒地区盐构造分为3期:①渐新世—中新世吉迪克期为构造平静期,发育盐撤凹陷和盐底辟;②中新世康村期—上新世早期构造挤压微弱,发生早期褶皱作用,却勒盐丘继续发育,北部盐底辟中新世末停止发育;③上新世晚期—现今发生大规模逆冲推覆,是褶皱-冲断带主要形成时期,发育大型盐撤凹陷、外来盐席、盐推覆构造、盐背斜和滑脱褶皱。却勒地区东、西段盐构造变形差异主要形成于上新世晚期—现今(第3期)。喀拉玉尔滚右旋走滑断层为薄皮构造,调节了却勒地区东、西段前缘的变形差异。却勒地区构造变形主要受控于盐岩沉积范围、区域构造应力及强度、上覆层应变强度和差异负载(沉积负载和局部构造负载)。
Based on field observation,Landset image,logging and seismic data,tw o regional cross sections have been constructed in the Quele area,Kuqa depressi on. The main salt structural styles in study area are salt diapirs,salt welds,salt withdrawal minibasins,large-scale salt nappe,allochthonus salt sheet,sa lt pillow,salt anticlines,and detachment folds. The main difference between ea stern and western segments is that salt withdrawal minibasins,salt anticlines a nd detachment folds only developed in the eastern segment. Salt structures forme d in three growth stages from Oligocene to present:(1) during Oligocene to earl y Miocene,salt withdrawal minibasin and passive diapirs formed; (2) from late M iocene to early Pliocene,early folding developed under weak regional compressio n,meanwhile,Quele salt dome continue to growth passively and the northern diap ir ceased at the end of Miocene; and (3) since late Pliocene to present,large-scale minibasins,allochthonus salt sheet,salt pillow,salt anticlines,and det achment folds formed. This is the major period of folding,thrusting,and squeez ing diapirs in Quele area. Deformation difference between eastern and western se gments formed mainly during the third stage. Karayulgun dextral strike-slip fau lt,which is a thin-skinned structure,adjusted the deformation difference loca ted at frontal range of Quele area. The major controlling factors of salt struct ures include the distribution of salt,regional tectonic stress and strength,st rength of overburden and differential loading (Sedimentary loading and local str uctural loading).
引文
陈楚铭,卢华复,贾东,贾承造.1999.塔里木盆地北缘库车再生前陆褶皱逆冲带中丘里塔格前锋带的构造与油气.地质论评,45(4):423~433.
    范湘涛,卢华复,郭华东,邵芸.2000.库车冲断带新构造遥感分析.地质论评,46(5):499~506.
    贺电,李江海,李百寿.2009.塔北喀拉玉尔滚断裂系构造特征及地质意义.北京大学学报(自然科学版),45(1):90~96.
    卢华复,贾东,陈楚铭,刘志宏,王国强,贾承造.1999.库车新生代构造性质和变形时间.地学前缘,6(4):215~221.
    卢华复,贾承造,贾东,陈楚铭,刘志宏,王国强,王胜利.2001.库车再生前陆盆地冲断构造楔特征.高校地质学报,7(3):257~271.
    汤良杰,贾承造,金之钧,皮学军,陈书平,谢会文.2003a.库车前陆褶皱冲断带中段第三系盐枕构造.地质科学,38(3):413~424.
    汤良杰,贾承造,皮学军,陈书平,王子煜,谢会文.2003b.库车前陆褶皱带盐相关构造样式.中国科学(D辑),33(1):38~46.
    汤良杰,金之钧,贾承造,皮学军,陈书平,谢会文,王子煜.2004.库车前陆褶皱-冲断带前缘大型盐推覆构造.地质学报,78(1):17~25.
    汤良杰,李京昌,余一欣,王清华,杨文静,谢会文,陈书平,彭更新.2006.库车前陆褶皱-冲断带盐构造差异变形和分段性特征探讨.地质学报,80(3):313~320.
    王燮培,严俊君.1995.塔里木盆地北部断裂格架分析.地球科学——中国地质大学学报,20(3):237~242.
    汪新,贾承造,杨树锋,Hubert-Ferrari A,Suppe J.2002a.南天山库车冲断褶皱带构造变形时间——以库车河地区为例.地质学报,76(1):55~63.
    汪新,贾承造,杨树锋.2002b.南天山库车褶皱带构造几何学运动学.地质科学,37(3):372~384.
    汪新,唐鹏程,谢会文,雷刚林,黄少英.2009.库车坳陷西段新生代盐构造特征及演化.大地构造与成矿学,33(1):57~65.
    王清华,杨明慧,吕修祥.2004.库车褶皱冲断带秋里塔格构造带东、西分段构造特征与油气聚集.地质科学,39(4):523~531.
    余一欣,汤良杰,杨文静,彭更新,雷刚林,金文正,万桂梅,马玉杰.2007.库车前陆褶皱-冲断带前缘盐构造分段差异变形特征.地质学报,81(2):166~173.
    Bahroudi A,Koyi H A.2003.Effect of spatial distribution ofHormuz salt on deformation style in the Zagros fold and thrustbelt:an analogue modeling approach.Journal of the GeologicalSociety,London,160:719~733.
    Chen S P,Tang L J,Jin Z J,Jia C Z,Pi X J.2004.Thrust and foldtectonics and the role of evaporates in deformation in thewestern Kuqa foreland of Tarim Basin,Northwest China.Marine and Petroleum Geology,21:1027~1042.
    Hardy S,Poblet J.1994.Geometric and numerical model ofprogressive limb rotation in detachment folds.Geology,22(4):371~374.
    Huang B C,Piper J D A,Peng S T,Liu T,Li Z,Wang Q C,ZhuR X.2006.Magnetostratigraphic study of the Kuchedepression,Tarim basin,and Cenozoic uplift of the Tian ShanRange,western China.Earth and Planetary Science Letters,251:346~364.
    Hudec M R,Jackson M P A.2006.Advance of allochthonous saltsheets in passive margins and orogens.AAPG Bulletin,90(10):1535~1564.
    Hudec M R,Jackson M P A.2007.Terra infirma:understandingsalt tectonics.Earth-Science Reviews,82(1~2):1~28.
    Jackson M P A,Talbot C J.1991.A glossary of salt tectonics.Austin,Texas:The University of Texas at Austin,Bureau ofEconomic Geology Geological Circular91~4,1~42.
    Letouzey J,Colletta B,Vially R,Chermette J C.1995.Evolutionof salt-related structures in compressional settings.In:JacksonM P A,Roberts D G,Snelson S,eds.Salt Tectonics:a GlobalPerspective.AAPG Memoir65,41~60.
    Rowan M G,Vendeville B C.2006.Foldbelts with early saltwithdrawal and diapirism:physical model and examples fromthe northern Gulf of Mexico and the Flinders Ranges,Australia.Marine and Petroleum Geology,23:871~891.
    Sans M,Vergés J.1995.Fold development related to contractionalsalt tectonics:southeastern Pyrenean thrust front,Spain.In:Jackson M P A,Roberts D G,Snelson S,eds.Salt Tectonics:a Global Perspective.AAPG Memoir65,369~378.
    Sobel E R,Chen J,Heermance R V.2006.Late Oligocene EarlyMiocene initiation of shortening in the southwestern ChineseTian Shan implications for Neogene shortening rate variations.Earth and Planetary Science Letters,247:70~81.
    Sobel R E,Dumitru T A.1997.Thrusting and exhumation around the margins of the western Tarim basin during the India-Asiacollision.J.Geophys.Res.,102:5043~5063.
    Yin A,Nie S,Craig P,Harrisson T M,Ryerson F T,Qian X L,Yang G.1998.Late Cenozoic tectonic evolution of the southernChinese Tian Shan.Tectonics,17:1~27.

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心